* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-width: 320px;
  margin: 0;
  color: #252f35;
  background: #fff;
  font-family: Arial, Helvetica, sans-serif;
}
img, svg, video { max-width: 100%; }
button, input, textarea, select { font: inherit; }